JSON issue in chrome extension only

[David Woodstuck]

Server side output (invoke http://192.168.1.120:8888/api/hellos) is listed below:

[ {
  "id" : "1",
  "name" : "ronan"
}, {
  "id" : "2",
  "name" : "john"
} ]

Client side uses https://ronanquillevere.github.io/2014/03/16/gwt-rest-app.html#.V-U9gPnytQI. It works fine in web page. But if I deploy the same web application into Chrome extension, I got a message like "response is Not valid JSON formatter". I check Chrome debug to confirm that the json from serve side is the same as above.

Thanks,

David